[IW5] [T6] Safe Area

Feature: Option to change the Safe Area for the Menu and HUD.Description: "safearea_horizontal" and "safearea_vertical" work for the Menu, "safearea_adjusted_horizontal" and "safearea_adjusted_vertical" for HUD...but the first is editable, and the second isn't.Motivation: Some users may prefer to have the HUD more centered or something like that. :P